My homework is due soon, help!!

A≈50.27

Step-by-step explanation:

( Im gonna replace meters with inches, but that wont change the calculations)

Circle area = π * r² = π * 16 [inch²] ≈ 50.27 [in²]

π ≈ 3.14159265 ≈ 3.14

d = r * 2 = 4 [inch] * 2 = 8 [inch]

50.24

Step-by-step explanation:

A = Area

Radius = 4 (The radius is half of the diameter

Diameter = 8

Pie = 3.14

A = (pie)r^2

A = (3.14)4^2

A = (3.14)16

A = 50.24

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.